Filler for pulp-machines



A. C. VAN KIRK.

FILLER FOR PULP MACHINES.

APPLICATION FILED APR. 51 1920.

Patented Mar. 15, 1921-.

.Iar

PATENT OFFICE.

ARTHUR C. VAN KIRK, OF MIDDLETOWN, OHIO.

FILLER FOR IULP-MAGHINES.

Specification of Letters Patent.

Patented Mar. 15, 1921.

Application filed April 5, 1920. Serial No. 371,559.

To all whom it may concern:

Be it known that I, ARTHUR C. VAN KIRK, a citizen of the United States, residing at Middletown, in the county of Butler and State of Ohio, have invented a new and useful Filler for Pulp-Machines, of which the following is a specification.

This invention relates to machines for refining paper stock, and it is the object of the invention to provide means for securing the blades of the machine in spaced relation with each other in a manner to insure against injuring the shell of the machine, in the event that the knives meet with an obstruction.

\Vith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawing;

Figure 1 illustrates an end elevational view of a shell employed in paper stock refining, the head thereof being removed.

Fig. 2 illustrates a fragmental view of a filler employed for securing the blades of the machine in spaced relation with each other.

Fig. 3 illustrates an end view of the same.

Fig. 4 is a bottom view of the filler.

Referring to the drawing in detail, the shell which supports the usual grinding blades, is substantially conical in side elevation, and is provided with the annular flange 5 disposed at the lower edge thereof, which flange is apertured as at 6 to accommodate the usual head, not shown, and which is employed for maintaining the plug, not shown, in proper relation within the shell, during the grinding of the paper stock.

Extending longitudinally of the shell proper, and provided on the interior thereof, are the usual grinding blades 7 supported in spaced relation by means of the filling blocks 8, which form the important feature of the invention.

Each of these filling blocks is formed of wood material having exceedingly tough qualities, the fillers being cut or formed in a manner so that the grain thereof will extend circumferentially of the shell, or parallel with the direction of rotation of the shell. It will thus be seen that lateral strain directed to the blades 7 will be transmitted to the filling blocks longitudinally of the grain, and not transversely thereof, as is the usual occurrence.

These filling blocks are each of a width less than the width of the blades 7, so that an appreciable portion of the blades will extend beyond the filling blocks to perform the grinding action.

In order that the filling blocks 8 will be further strengthened, I have provided a reinforcing strip 9 having the grain thereof extending transversely of the grain of the filling block, to which the same is attached, the reinforcing strips 9 bein of widths equal to the widths of the filling blocks .8.

Cut out portions 10 are provided in the filling blocks so that the filling blocks may be slightly curved to conform to the curva-' I claim as new is v 1. In combination with the shell and knives of a paper stock refining machine, filling blocks adapted to be positioned between the knives, said filling blocks comprising fibrous material, the grain thereof extending circumferentially of the shell.

2. In combination with the shell and knives of a paper stock refining machine, filling blocks positioned between the knives, each of said filling blocks including a relatively long strip of fibrous material having a grain extending circumferentially of the shell, and means secured to one edge of each of the blocks for reinforcing the same.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

ARTHUR C. VAN KIRK.

Witnesses:

S. R. JULIEN, R. F. STEWART. 

